JPH0481081A - Camera apparatus for cctv system - Google Patents

Abstract

PURPOSE:To display a picture without inclination by detecting the inclination of the main body of the camera apparatus in right and left directions and correcting the inclination of a solid-state imaging device by a turning body. CONSTITUTION:In a camera apparatus 1 of the CCTV system, an inclination angle detector 7 is provided to detect the inclination angle of the main body, and a turning device 8 is provided to support a solid-state imaging device 3 with a motor freely turnable to the main body. When the camera apparatus 1 is obliquely installed, the turning device 8 is driven corresponding to the inclination angle. Therefore, the inclination of the solid-state imaging device 3 can be corrected and set in a normal state, and a display picture due to a video signal from the obliquely installed camera apparatus 1 is not made oblique but made normally standing and can be clearly observed. Thus, even when the camera apparatus is obliquely installed, the normal standing picture is displayed.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention provides
The present invention relates to a camera device used in a CCRV system, and more specifically to a camera device for a CCRV system in which a display image on a monitor device is prevented from tilting when the camera device is tilted in the left-right direction.

[Conventional example] In recent years, CCTV cameras and video cameras have become smaller and lighter.
A CCD solid-state image sensor is used due to its high reliability, and this CCTV CCD camera (D camera) is not only used in security systems at financial institutions and convenience stores, but also in the FA field, such as visual sensors for robots. It became so.

The camera device 1 of this CCTV system is, for example, the 12th
As shown in the figure, at least an optical system 2 that captures an object to be imaged, a solid-state image sensor 3 that converts an image formed by this optical system 2 into an electrical signal, and a signal processing unit that processes this electrical signal in various ways 3, controls this signal processing section 4, and
It is comprised of a control section 5 that controls the automatic focus control of the optical system 2 and the shutter speed of the solid-state image sensor 3. Since the video signal from the camera device 1 can be transmitted to the monitor device via the transmission path (coaxial cable) and the video can be displayed on the screen of the monitor device, it is possible, for example, to move away from a dangerous place. It is possible to monitor.

[Problems to be Solved by the Invention] By the way, in the camera device of the CCTV system described above, each part is fixed to the main body case, so as shown in FIGS. W1
If the monitor is installed horizontally, an image without tilt will be displayed on the screen 6 of the monitor device.
As shown in Figure 6.

When the monitor group [1 is tilted to either the left or right, the image is displayed tilted on the screen 6.

Therefore, the above camera group! When installing 1.

There is a problem in that not only must the camera device 1 be installed so that it does not tilt in the left-right direction, but also that a tilted image must be viewed in a location where the camera device 1 cannot be installed unless it is tilted.

This invention was made in view of the above problems, and its purpose is to provide a camera device for a CCTV system that can display images without tilting even if the camera device is installed tilted. be.

[Means for Solving the Problems] In order to achieve the above object, the present invention forms an image of an object to be imaged on a solid-state image sensor through an optical system, processes electric signals resulting from this image in a predetermined manner, and monitors the object. A camera device for a CCTV system that outputs a video signal that can be displayed on the device includes: a tilt angle detection device that detects a tilt angle in the left-right direction of a camera device body; and a control unit that controls the rotating body in accordance with the detected inclination angle by the inclination angle detection means, the inclination angle detection means detects the inclination of the camera device main body in the left and right direction. The gist is that the tilt of the solid-state image sensor is detected by the device and corrected by the rotation device.

[Function] With the above configuration, when the camera device of the CCTV system is installed and the camera device is tilted in the left-right direction, the tilt angle is detected by the tilt angle detection device. Then, the rotation device corrects the tilt of the solid-state image sensor by the amount within the tilt corresponding to the detected value.

Therefore, even if the main body of the camera device is tilted in the left-right direction, the solid-state image sensor will compensate for the tilt, so the image displayed on the screen of a monitor device etc. will be taken with a camera device that is not tilted in the left-right direction. It will be exactly the same as the image.

[Example] Hereinafter, an example of the present invention will be described based on FIGS. 1 to 11. In FIG. 1, parts that are the same as those in FIGS. 12 to 16 are designated by the same reference numerals, and redundant explanation will be omitted.

In FIG. 1 and FIG. 2, this camera device 1 includes:
A rotation device that includes an inclination angle detection device N7 that detects the inclination angle (inclination in the left-right direction) of the main body, and a motor that supports the solid-state image sensor 3 and rotates with respect to the main body of the solid-state image sensor 3!
8, and a control section 9 that controls the rotation group M8 in accordance with the detected inclination angle in addition to the functions of the control section 5 shown in FIG.

Moreover, as shown in FIGS. 2 and 3, the above-mentioned inclination angle detection device! 7 is a device consisting of an arcuate resistor 7a with both ends at approximately the same height and a slider 7b rotating inside the arcuate resistor 7a; one end of the arcuate resistor 7a is equipped with a camera; It is connected to the power supply voltage Vcc of the circuit w1, and the other end is connected to ground. As a result, as shown in FIG. 4, the inclination angle detection device lf7 can be regarded as a variable resistor (potentiometer), and obtains a voltage from the slider 7b according to the position of the slider 7b. be able to. In this case, the inclination angle detection device I! 7 is horizontal, that is, if the main body of the camera device 1 is horizontal, the detection voltage by the inclination angle detection device i [7 is approximately Vcc/2, and the detection voltage is, for example, when the main body of the camera device w1 is Tilt to the upper right and slider 7
When b rotates to the left, it becomes a value larger than Vce/2, and when it is reversed, it becomes a value smaller than Vce/2.

When installing the camera device 1 having the above-mentioned configuration, if the camera device 1 rises to the right on the page as shown in FIGS. 5 and 6, for example, the slider 7b of the inclination angle detection device 7 Since the inside of the arcuate resistor 7a is rotated to the left by the amount of its inclination, a voltage corresponding to the rotated position is obtained. in this case.

Since the detected voltage is larger than Vcc/2, the control unit 9 controls the rotating device [8] so that the detected voltage becomes approximately Vcc/2.

Then, the rotation device 8 is equipped with a camera! 1 The solid-state image sensor 3 and the tilt angle detection device are tilted by the calculated angle opposite to the tilt direction of the main body, that is, to the left on the page, and are supported by the rotation device 8! 7 is also rotated. At this time, since the slider 7b of the inclination angle detection device 7 rotates inside the arc-shaped resistor 7a, the detected voltage changes. When the detected voltage reaches approximately Vcc/2, that is, when the fixed image sensor 3 is in the same state as when the main body of the camera assembly w1 is installed horizontally, the control of the rotation function section 8 is stopped. It will be done. Therefore, as shown in FIG. 7, when the video signal from the diagonally installed camera device w1 is input to the monitor device.

The screen 6 displays a normal upright image, not an oblique image.

8 and 9 are schematic front views of a camera device 1 showing another embodiment of the present invention.

In this figure, the tilt angle detection device 7 is attached to a predetermined location on the main body of the camera device 1, not to the rotation device 8.

In the case of this embodiment, when the camera device 1 is installed obliquely, its inclination angle detection device w7 remains in the same obliquely inclined state, and for example, the camera device w1 does not appear on the paper as in the previous embodiment. If it is tilted to the upper right, the detected voltage from the tilt angle detector i[7 remains at a value greater than V cc/2.

Then, the control unit 9 calculates the tilt angle of the camera device 1 based on the detected voltage, and the rotation device Ii8 is controlled based on this calculation data.
The solid-state image sensor 3 supported by the solid-state image sensor 8 is rotated in a direction opposite to its inclination. That is, the fixed image sensor 3 is placed in exactly the same state as when the main body of the camera device 1 is horizontal. As a result, as in the previous embodiment, when the video signal from the camera device 1 installed obliquely is input to the monitor device, the screen 6 displays not an oblique image but a normal upright image. is displayed.

Further, as the inclination angle detection device 7 of the above two embodiments, those shown in FIGS. 10 and 11 can be considered. In addition,
In the figure, the same parts as in FIG. 3 are given the same reference numerals, and redundant explanation will be omitted.

In the case of the example shown in FIG. 10, the end of the arcuate resistor 7a at a high position is connected to the power supply voltage Vcc of the circuit of the camera device 1, and the end at a low position is connected to the ground. It has been done. Furthermore, in the case of the example shown in Figure 11,
Conversely, the end of the arcuate resistor 7a located at the lower position is connected to the power supply voltage Vcc of the circuit of the camera device 1, and the other end is connected to the ground.

In this manner, when the camera device 1 is installed at an angle, the rotation device 8 is driven and controlled according to the angle of inclination, and the solid-state image sensor 3 supported by the rotation device 8 is moved by the amount of the inclination. Since it has been corrected and returned to the normal state,
When the video signal from the camera device 1 is input to the monitor device, an erect image is displayed on the screen 6 instead of an oblique image. Therefore, when installing the camera device 1, it is not necessary to consider the levelness, and the installation can be made easily.
Another effect is that the working time is short.

[Effects of the Invention] As explained above, according to the camera device of the CCTV system of the present invention, the camera device 1 of the CCTV system includes the tilt angle detection device 7 for detecting the tilt angle of the main body.
A rotating device 8 including a motor that supports the solid-state image sensor 3 and is built into the main body and can rotate freely is provided, and the camera family! 1
when installed diagonally.

Since the rotation device 8 is driven in accordance with the tilt angle, the tilt of the solid-state image sensor 3 can be corrected to a normal state, and the video signal from the camera device 1 installed diagonally can be corrected. It is possible to make the displayed image not diagonal but normal and erect, making it easier to see.

[Brief explanation of the drawing]

11i1 is a schematic block diagram of a camera device of a CCTv system showing an embodiment of the present invention, FIGS. 2, 5 and 6 are schematic front views of the camera device, and FIGS. 3 and 4 is a schematic explanatory diagram of a tilt angle detection device used in the camera device, FIG. 7 is a display screen diagram of a video signal from the camera device, and FIGS. 8 and 9 are CCTVs showing other embodiments of the present invention. FIG. 2 is a schematic block diagram of a camera device of the system. 10 and 11 are diagrams explaining a modification of the above-mentioned inclination angle detection device, FIG. 12 is a schematic block diagram of a camera device of a CCTV system of a conventional CCRV system, and FIG. 13 and FIG. FIG. 12 is a schematic front view of the camera device, and FIGS. 14 and 16 are display screen views of video signals from the camera device in the states shown in FIGS. 13 and 15. In the figure, 1 is a camera device, 2 is an optical system, 3 is a solid-state image sensor,
4 is a signal processing unit (camera group [1]), 6 is a screen (monitor device), 7 is a tilt angle detection device, 7a is an arcuate resistor,
7b is a slider, and 8 is a rotating device. Patent Applicant: Fujitsu General Corporation Representative, Patent Attorney Takuya Ohara Figure 2 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 EI

Claims (4)

[Claims] (1) In a camera device for a CCTV system that images an object to be imaged on a solid-state image sensor through an optical system, processes the electric signal resulting from the image in a predetermined manner, and outputs it as a video signal that can be displayed on a monitor device, the camera a tilt angle detection means for detecting a tilt angle in the left-right direction of the device body; a rotating body that supports at least the fixed image sensor and is rotatable with respect to the camera device body; and detection by the tilt angle detection means. a control means for controlling the rotating body according to the tilt angle, the tilt angle detecting means detects the tilt of the camera device main body in the left-right direction, and the tilt of the solid-state image sensor is corrected by the rotating body. A camera device for a CCTV system. (2) The inclination angle detection means is composed of an arc-shaped resistor and a slider that is movable on the arc-shaped resistor,
According to claim (1), one end of the arc-shaped resistor is connected to the power supply voltage of the circuit, the other end is connected to the ground of the circuit, and the detection signal of the inclination angle is obtained from the slider. CCTV system camera equipment. (3) The camera device for a CCTV system according to claim (1), wherein the inclination angle detection means is attached to the camera device main body. (4) The camera device for a CCTV system according to claim (1), wherein the inclination angle detection means is attached to the rotation mechanism means.